Adjustable form



Patented Sept. 2, 1924.

UNITED STATES PAT-ENT OFFICE.

BENJAMIN F. COCKERELL AND ALBERT COMER, OF KANSAS CITY, MISSOURI.

ADJUSTABLE FORM.

Application faea october s, 1923. serial No. 667,207.

To 11?/ ttf/wm it muy conce/12 Be it linown that ""we. BENJAMIN F. Cocnrnunr. and .\Lr.i:a'r tontzn. citizens otl the l'nited States. residing at Kansas (ity, in the county ot' Jackson and State ol' Blissouri, have invented certain new and useful Improvements in Adjustable Forms; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains .to make and use the Same. reference being had to the :ureonipanying drawings, and to the figures of reference marked thereon.y which form a part o1 this specification.

This invention relates to an adjustable form for concrete structures and particularly to a form support for floors and ceilings of a building. The primary object of the invention is to provide a simple inexpensive7 durable structural t'orm which can e set up and taken down ina convenient manner. The form is so constructed that it can stand rough usages to which devices ot this kind are subjected. and we preferably construct the form ot sheet metal, because sheet metal may be easily shaped and it possesses sutiicient strength to meet the requirements encountered. The form can be set up on the sotiit boards which are supported by the beams and the shoving and after the concrete has partly set the forms can be taken down without removing the sof'tit boards, the beams or the shoring. -The sotfit boards, beams and shoring are left in place to support the concrete structure while the forms can be removed to be used elsewhere.

The novel construction of our invention will be apparent by reference to the follow ing description in connection with the accompanying drawings, in which- Fig. 1 is a perspective view of part of a concrete structure set up in accordance with our invention, parts being broken away to better illustrate other parts.

Fig. 2 is an enlarged bottom perspective view of part of a form constructed in accordance with our invention.

Fig. 3 is a fragmentary sectional view through one of the main members of the form showing a brace end secured thereto.

Fig. 4 is an end view of one of the members of the form.

Fig. 5 is a fragmentary perspective view o one end of a brace, and

Fig. 6 is a detailed perspective view of a splice plate.

Referring now to the drawings by numerals of reference.

l1 designates the shoring, 2 the beams and the soflit boards` all of which are old and well known. Supported on the sotiit boards in spaced relation are the torms,l cach form is illustrated as comprising two angular sheets 4 and 5. having substantially upright wings and substantially horizontal wings. The upright wings 6 preferably ha ving inturned horizontal flanges 7 which rest upon the .sotiit boards and which tend to brace the t'orm members longitudinally. 'l'he upper wings 8 of the members 4 and 5 preferably overlap one another, but in some cases their edges may be spaced apart and inserts in the form of sheets or strips ot' metal may be used to rest upon the transverse braces which hold the members 4 and 5 together. The transverse braces preten ably consist of sheets or plates 9 and'10, each of which is provided with a right angularly extended lip 11 and 1Q and While we recommend the use of the flanges l1 and 1Q, it is obvious they may be eliminated it desired. The members '9 and 10 are provided near their inner ends with bolt openings 13 to receive securing bolts 14 whereby the plates 9 and 10 may be fastened together. The outer edges of the members 9 and 10' are provided with right angularly projecting tongues 15 and 15 which engage loops formed b v the upright walls of the members 4 and 5 and the bars 16 which are fastened to the side walls of the members 4 and 5 b v fastening devices 1T the bars 16 being held in spaced relation with the walls of the members 4 and 5 by spacing washers 1S and 19. It will be noticed that the tongues 15 and 15 are ot' slightly less width than the plates 9 and 10 so that the tongues 15 and 15 may engage in the space between the bars 16 and the side walls 4 and 5.

Then it is desired to construct the floor and the ceiling the shoring beams and sotl'it dit" After theconcrete has dried somewhat the forms can be Aknocked down or dis-assembled, so that the plates 4 and 5 and theirwill still be supported upon the soitit boards.

By leaving the shoring beams and sotlit boards in place the ceiling and flooring can dry out without liability of sagging or distortion. ln some instances the distances between soility boards will be greater than others, so we have provided a splice plate 21 provided with openings 22 through which the fastening device 14 can be introduced to fasten t-he splice plate to the respective ends of the members 9 and lO,l and if there is a gap between the edges of the members 4 and 5, an insert plate or strip may be placed between the edges of the members 4 and 5.

Attention is called to the fact that the form members 4 and 5 are so constructed that the inturned fianges 7 terminate short of the ends to provide extending overlapping ends 23 so that one form can overlap the other form, the extent of overlapping being limited by the edges of the inturned flan es 7 whose ends abut, and in this connection, attention is called to the Jfact that the inturned flanges serve a dual purpose, in that they serve as stops to limit the overlapping engagement lof the form members and they also constitute re-enr'orcing members to strengthen the substantially upright portions 6 of the form members 4 and 5, thereby extending considerable rigidity to the form members.

It will also be apparent that the end 23 overlaps similar ends on longitudinally complementary angle plates to make the form lstructure continuous.

It will be apparent from the foregoing that a form structure made in accordance with our invention is simple, durable and efficient and easy to set up and take down.

What we claim and desire to secure by Letters-Patent is:

l. An adjustable form for concrete structures comprising two members, each consisting of an angle plate, each plate having an upright portion and a horizontal portion, the vupright portions havingstiffening members at their lower edges to rest upon sofHt boards and pairs of brace members connecting the iirst two members, one brace member of each pair engaging an upright portion of one of the :first two members, the inner ends of the.brace members of each pair overlapping one another and means for adjustably connecting the brace members.

2. An adjustable form for concrete structures comprising two members, each consistmg of an angle plate, each plate having an upright portion and a horizontal portio'n, the upright portions having stitl'ening members at their lower edges consisting of inturned flanges and pairs ot' bracing plates having their outer end portions engaging the upright members and their inner end portions adj ustably connected together, the bracing plates havin lateral stiflening flanges.-

3. An adjusta le form for concrete structures comprising two members, each consisting of an angle plate, each havingan upright portion and a horizontal portion, the upright portions of the two members having inturned flanges at their lower edges, the flanges terminating short of the ends of the members on which they are located, and adjustable bracing plates arrangedin pairs between the upright portions, the outer ends of the bracing plates engaging complementary members on the upright portions, the inner ends of the bracing plates being adjustably secured together..

4. An adjustable form comprising two angle plates, each having an upright portion and a horizontal portion, the upright portions having brace engaging bars secured in spaced relation thereto and brace members having right angular tongues on their respective ends for engaging the bars.

5. An adjustableI form comprising two angle plates, each having an upright portion and a horizontal portion, the upright portions having brace engaging bais secured in spaced relation thereto and brace members having right angular tongues on their 'f spective ends for engaging the bars, sa brace members being adjustably secured gether.

6..,An adjustable form comprising tw angle plates, each having an upright portion and a horizontal portion, the upright portions having brace engaging bars secured in spaced relation thereto and brace members having right angular tongues on their respective ends for engaging the bars, said brace members being adjustably secured together in overl pping relation.

7. An adjusta le form for concrete structures comprising two angle plates, each having au upright portion and a horizontal portion and transverse brace plates, vertically arranged between the two angle pla-tes, the outer ends of the brace plates having r1gh't angular liangesengaging parts on the upright portions and means for'fastening the two plates together.

8. An adjustable form comprising two` angle plates, each having an upright portion and a horizontal portion and transverse brace members for securing the angle pl:- "es together, the brace members comprising lvo main plates and means for fastening the. i. we maln'plates together, in combination with a splice plate to connectr the ends oit the main platesn 9. An' adjustable form comprising two angle plates'having re-enforcing flanges at' one edge of each plate, the opposite edges of the channel plates overlapping, bars connected to but spaced from the angle plates and braces connecting the angle plates, each brace comprising channel members having overlapping ends, means for securing the .overlapping ends together and right angularly projecting tongues on the channel 'plates to engage the bars on the angle plates.

10.V A form for concrete structures compairs and means for removably connecting the inner ends of complementary brace members in adjustable relation.

In testimony whereof We ailix our sgna- 20 tures.

BENJAMIN F. cooKEREL-L. ALBERT COMER. 

